# -*- Autoconf -*- # Checks required to run `subpipe'. # # Copyright (C) 2002, 2003 Free Software Foundation, Inc. # # This program is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation; either version 2 of the License, or # (at your option) any later version. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program; if not, write to the Free Software # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA # 02111-1307 USA # Written by Paul Eggert . AC_DEFUN([BISON_PREREQ_SUBPIPE], [ AC_TYPE_PID_T AC_CHECK_HEADERS([fcntl.h]) AC_HEADER_SYS_WAIT AC_CHECK_FUNCS(dup2 waitpid) AC_FUNC_FORK ])